Samuel babr



(No Model.)

S. BARR.

. PLOW. N0. 377,226. Patented Jan. 31, 1888.

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@34 M wmm1 UNITED STATES PATENT OFFICE.

SAMUEL BARR, MOGAUSLAND, IO\VA.

PLOW.

SPECIFICATION forming part of Letters Patent No. 377,226 dated January 31, 1888.

Application filed July 19, 1887. Serial No. 244,696. (No model.)

To all whom it may concern.-

Be it known that I, SAMUEL BARR, a citizen of the United States, residing at McGausland, n the county of Scott and State of Iowa, have invented certain newand useful Improvements 1n Flows, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a perspective view of a plow with my improvements attached. Fig. 2 is a side elevation of the same, viewed from the landside of the plow. Fig. 3 represents the colter and fastening devices detached from the plow.

My invention relates to plows, colters, and similar agricultural implements, and to the manner of constructing the edge and the means of adjusting and putting the same into effect; and it consists in the construction and combination of devices, hereinafter described and claimed.

To enable others skilled in the art to which my invention appertains to make and use the same, I will now describe its construct-ion and indicate the manner in which the same is carried out.

The objects of my invention are, first, to improve the edge of the cutting-tools by substituting for the common smooth edge a broken line of edges consisting of a system of cutting or slitting points more or less prominent, an important new feature being that the points or serrations of the edge range backward in a succession of their cuttingpoints, designed to relieve the drag incident to pulling a long continuous cutting-blade forcibly through the soil. It is a well-ascertained fact that a plow, shovel, or hoe is not worn dull so much by the necessary cutting, which should be quickly done, as it is by the constant tendency of roots, turf, or fibers mixed with grit to slide back on the edge of the implement,which abrades the edge more than the actual cutting when finally done.

The essential purpose of my improved serrated edge is to obviate this difficulty, as no fiber would likely pass this succession of sharp points without being severed. The length of edge in actual cutting-resistance is also much abbreviated, as the deeper part of the serra tion is not necessarily kept sharp, as the point in advance anticipates the out.

To improve the means of put-ting the invention in shape to secure a better effect as a colter, I arrange a vibrating colter having superior cutting-power, and being lighter in draft, lighterin weight, easier of construction, and of trifling cost in material. To secure the full value of the serrated edge on a vibrating colter,it is necessary to suspend the colter from the plow-beam and to curve the colterblade backward in the form of an are.

In the drawings, A represents my serrated arc-shaped colter-blade, the curved under edge of which is formed into a system of thin cuttingpoints, a, which, as the plow advances through the soil, sever the turf, stubble, weeds, 850., by a constant succession of drawing cuts across the sward by the points a as they pass, each point deepening the work of the preceding one in turn. The same principle of serrature may be applied to the edge of a plowshare.

It is a well-known fact that the corner or point of any tool cuts easier than its broad edge. On this principle I resolve the broad edge of a plow into a system of more free-cutting points, thereby saving a large percentage of draft, and also of abraded steel, as nothing 7 is worn from the serrated edge by undue sliding.

Any practical plowman may observe that the outer corner of his steel plowsharc, commonly called the wing, remains comparatively sharp after the rest of the edge is worn dull. In this and similar cases the wing remains sharp because it has the advantage of cutting or slitting on the principle above described. It is for the purpose of securing the full ad vantage of this tendency to ease and cero tainty of cutting and to secure a greater permanency of sharp edge on the plowshare that I form the entire length of edge into a succession of such frcecutting corners, all having a like backward trend.

In order to secure an easy and ready adaptation of the beam-clasp to a plow-beam of any varying angle of surface, whether wood or metal, and to furnish a bearing for the coltershank, I place the plate B on the upper surface of the beam and the plate 0 under the beam, and I secure these plates together by means of the screw-bolts b b and c0, each of the said plates being slotted, as shown in Fig. 3.

IOU

After forming the lower plate, 0, with a bearing, a, for the colter-shank, the body of the plate extends part of the way up the side of the beam,where it again spreads out in the form of a ledge, from which ledge rises the sleeve D as an additional bearing for the coltershank. This sleeve passes through the top plate, B, as shown in Fig. 2, the plate acting as a support, the plate being free to move up or down on the sleeve. This arrangement also allows the plate to adjust itself to any taper or angle of beam without affecting the line of the bearings of the colter shank or the position of the colter. It is evident that by the use of this sleeve-bearing D and the slotted holes in the plates B and C (see Fig. 3) the range of the beam-clasp is rendered universal as to size and taper of differently-formed beams,

whether wooden or iron.

face of the vertical portion of the plate C.

a When it is desirable to use the colter in a rigid position, the position of the adj ustmentblock is reversed on the coltershank, which brings the projections e e squarely and firmly 5 against the face of the plate,when the rigld colter may be readily-adjusted to any l1ne of cut or any depth or width of furrow-slice by the set-screw e.

Having thus described my invention, what Iclaim as new, and desire to secure by Letters Patent, is Y 1. The combination,with a plow andplowbeam, of a rearwardly-bent vibrating colter having a series of backwardly-ranged serrations formed on its lower curved surface and a shank capable of rotating or being locked, whereby said colter is fitted to said beam, substanlially as'described. t

2. The combination,with a plow-beam and colter, of the slotted plate B and the slotted plate 0, provided with the sleeve-bearing D and depressions e e,and the adj l sting-block E, provided with the projections e e and setscrew 6, all constructed and arranged substantially as and for the purpose herein set forth.

' 3. In combination with the plow -beam and colter, the beam-plates B and 0, provided with slotted bolt-holes, the short bolts b, and the long bolts a, substantially as and for the pur- 6o pose set forth.

SAMUEL BARR.

Witnesses:

H. E. GORBER, T. W. MOCAUSLAND. 

